[CentOS] setting up 3 network cards

Thu Apr 22 21:42:59 UTC 2010
John R Pierce <pierce at hogranch.com>

Jerry Geis wrote:
> Once I connect the three networks and try to ping something all I can 
> ping is internal network machines.
> Cant ping anything on eth1 or eth2.
> the route -n looks fine. the correct IP listest on left points to the 
> correct ethX on the right.
> the default route is using eth2 at the moment.
> Is there something "special" about setting up 3 network cards that may help?
> What  should I look into?

presumably each card is to a separate network with a separate address 
range, the appropriate netmask,  and optionally any static routes need 
for anything remote on those interfaces?